EP0997248B1 - Verfahren und Vorrichtung zur Übertragung von körnigem Material - Google Patents

Verfahren und Vorrichtung zur Übertragung von körnigem Material Download PDF

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Publication number
EP0997248B1
EP0997248B1 EP99118949A EP99118949A EP0997248B1 EP 0997248 B1 EP0997248 B1 EP 0997248B1 EP 99118949 A EP99118949 A EP 99118949A EP 99118949 A EP99118949 A EP 99118949A EP 0997248 B1 EP0997248 B1 EP 0997248B1
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EP
European Patent Office
Prior art keywords
layer
layer means
preparing
support
transferring
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99118949A
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English (en)
French (fr)
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EP0997248A3 (de
EP0997248A2 (de
Inventor
Carlo Antonio Camorani
Maris Algeri
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Individual
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Filing date
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Priority claimed from ITMO980196 external-priority patent/IT1304642B1/it
Priority claimed from ITMO980197 external-priority patent/IT1304643B1/it
Priority claimed from ITMO980261 external-priority patent/IT1304940B1/it
Priority claimed from ITMO980262 external-priority patent/IT1304941B1/it
Priority claimed from EP98124583A external-priority patent/EP0927687B1/de
Priority to EP99118949A priority Critical patent/EP0997248B1/de
Application filed by Individual filed Critical Individual
Publication of EP0997248A2 publication Critical patent/EP0997248A2/de
Publication of EP0997248A3 publication Critical patent/EP0997248A3/de
Publication of EP0997248B1 publication Critical patent/EP0997248B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/005—Devices or processes for obtaining articles having a marble appearance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0205—Feeding the unshaped material to moulds or apparatus for producing shaped articles supplied to the moulding device in form of a coherent mass of material, e.g. a lump or an already partially preshaped tablet, pastil or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • B28B13/022—Feeding several successive layers, optionally of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0295—Treating the surface of the fed layer, e.g. removing material or equalization of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor

Definitions

  • the invention relates to a method and a relative apparatus for transferring granular material in a controlled manner toward means arranged for receiving it; particularly, the invention can be applied to the loading of a die for the moulding of ceramic tiles.
  • granular material one means a loose product capable to flow, constituted by powders, granules of any form and dimension, scales, small tesserae, or any mixture of said elements.
  • IT-A-1104301 describes an apparatus in which a layer of cement material is moved through a sucking bell onto a further layer already positioned inside a cavity of a pressing mould.
  • this apparatus involves the need to load the layer and the further layer in subsequent times, with the consequence that a very complex and expensive rotating press is provided in order to prevent an excessive loss of productivity.
  • EP-A-0858873 discloses a machine for forming and pressing powders, particularly for producing ceramic tiles, comprising at least one unit for organizing a charge of loose powder inside a tray which forms at least one charge accommodation chamber which substantially matches a corresponding cavity of a pressing mould, at least one unit for transferring the charge into the cavity of the pressing mould without mutual movements among the components of the charge and at least one press for compacting the loose powders and obtaining the pressed product.
  • EP-A-0860256 discloses a method for transferring ceramic powder from a pick-up region to a utilization region comprising depositing the ceramic powder on a porous medium which is permeable to air but not to the powder, so as to produce a layered arrangement of powder, placing on the layered arrangement a porous diaphragm which is permeable to air but not to the powder, connecting the diaphragm to a suction source, so that a portion of the layered arrangement having preset dimensions continues to adhere to the diaphragm, transferring the portion onto the utilization region, connecting the suction diaphragm to a source of air in overpressure, so that the portion separates from the porous diaphragm and is deposited on the region.
  • a purpose of the present invention is to improve the known systems for the transfer of granular material; particularly to substantially overcome and resolve, totally or partially, the problems just described i.e. to allow the insertion of a decorating layer, for example a transfer, inside a pressing mould at the same time as the powder constituting the body of the tile, with working cycles substantially equal to those required for a normal tile without decorations.
  • Another purpose of the present invention is to allow to obtain said transfer directly during the productive cycle related to the pressing.
  • a further purpose of the present invention is to realize a device, that may be applied also to the presses more largely in use for the moulding of the ceramic tiles, i.e. those presses having mould of the type with die, lateral frame and punch always aligned, that allows, in a productive cycle with single pressing, a filling of the mould cavity without relative movements between the granules themselves, i.e. allowing different granular materials to be introduced into the mould in only one filling operation, also according to well defined patterns in the layers disposition and the surface, without the presence of excesses of powder to be recycled and without loss of productivity.
  • a further purpose of the present invention is to improve the explained technology in order to overcome its drawbacks, allowing, in the first place, a mould to be filled with only one loading operation, with a well defined and controlled stratigraphical and in plant disposition of different powders.
  • An apparatus 101 ( Figure 1) comprises an endless belt 102 of material permeable to the air, for example a fine wire netting or woven material, that is provided, on its outer surface, with some dividing walls 103 forming compartments having dimensions corresponding to that of the tile 104, said belt being moved in a controlled manner by rolls 105.
  • material permeable to the air for example a fine wire netting or woven material
  • Granules 108 are disposed between the dividing walls 103 on the belt 102 forming a base layer onto which a different granular material 112 forming a decorating pattern is disposed, that are advanced towards a terminal portion 113 of said belt 102 cooperating with sucking hood shaped transfer means 114.
  • Said sucking hood shaped transfer means 114 includes a porous diaphragm 115, overhung by a room 116 suitable to be subject to a vacuum through known means, not shown, and by side walls forming a frame 117 axially movable with respect to the said porous diaphragm 115.
  • the sucking hood shaped transfer means 114 is horizontally movable and translate from a position overhanging the terminal portion 113 of the belt 102 (as in Figures 1, 5, 6 and 7) to a position inside the open mould 118 (as in Figures 3 and 9), and vice versa.
  • Said mould 118 is constituted by a lateral frame die 119, a lower die 120 and an upper punch 121; obviously a mould of the type known as "double mirror" may be used, i.e. a mould with two lateral frame dies axially movable, or any other suitable mould.
  • the belt 102 advances by one step bringing a new portion of the granular mass 108, 112 in a position suitable for it being collected.
  • the transfer means 114 are provided with lateral walls 122 connected to the porous wall 115 and protruding toward the belt 102.
  • the walls 122 have a comparatively thin thickness, i.e. suitable for penetrating in a mass of granules 108 without considerably throwing it into disorder, or having a cross section shaped as a "wedge" with the tip turned downward.
  • a low permeability layer is provided, constituted by a support sheet 203 and interposed between the base layer 108 and the belt 102.
  • a decorating layer of granular material 208 is interposed between the low permeability layer 203 and the base layer 108, the decorating layer 208 together with the support sheet 203 constituting therefore what is defined as a transfer 209. It is furthermore provided a station Fl equipped with means 206 suitable to cover said transfer 209 with powders contained in a hopper 206 and constituting the base layer 108 of the tile 104.
  • the decoration can be performed with powder or granular material in a dry state, as in the example, or with powder or granular material mixed with a liquid means according to known technologies; in the first case there will be preferably a further station (not shown) for fixing said decorating material, for example by applying a fixing agent, in the second case there will be preferably a following drying station (not shown).
  • the whole portion of the belt 102 before the terminal section 113 lies on a permeable support 214, for example due to the presence of small holes 215; said support 214 together with a sealing wall 216 surrounds a room 217 inside which a light vacuum is maintained through known means, not shown. Said vacuum has the function of keeping firmly in position the sheet 203 and the respective transfer 209 on the belt 201.
  • a thin sheet of paper, plastic material or a low permeability layer designed to form said substantially impermeable wall for holding the powders 108, while the decorating materials can be disposed in an other position, for example above the powders 108 and directly in contact with the permeable wall 115.
  • the transfers 209 can be prepared in advance.
  • the sheets 203 may have a peripheral plan dimension corresponding to the dimensions of the tile 104, but they may be also constituted by a thin continuous band, for example of thermofusible plastic material that can be automatically cut at the right size by the same frame 220 heated to a suitable temperature.
  • the low permeability layer can be obtained by distributing a first layer 253 of powder material 254 on the belt 102, preferably through isolated regions having a peripheral extension corresponding approximately to the peripheral dimension of the tile 104.
  • Said powder material 254 will not be necessarily composed of decorating materials, but can be the same material 108 suitable for forming the body of the tile 104, or another material having characteristics specifically suited for the treatment to which it has to be subjected and for the function it has to accomplish.
  • the layer 253 can be subjected to a compacting action by passing it through the rolls 255 so as to form the low permeability layer 256, said layer is then covered by the powder 108 and by optional decorating layers 112.
  • the powders 256 may have advantageously a granular sizing less than the granular sizing of the powder layer 108.
  • the bundle of layers so so formed is then withdrawn by the sucking hood shaped transfer means 114 and transferred to the mould 118 as already described.
  • the decorating layer 112 and the layer 253 may be distributed with known distributing means 213.
  • the advantage of such version resides in the fact that, even if the transfer means 114 has a "static vacuum" operation, there is no presence of extraneous material which has to be detached and eliminated from the pressed tile 104 because said layer 253 constitutes an integral part of the tile 104; in addition, compacting said layer 253 is particularly easy because said layer has a small thickness so that great diameter rolls are not necessary; notable pressing strengths are either not necessary, because the instantaneous pressed region is somewhat restricted.
  • the small thickness of the layer 253 allows a good compacting action to be obtained in the peripheral regions of said layer even in absence of walls for a lateral containment of the powder.
  • the belt 102 in this version may be also advantageously divided into two parts, the first part where the compacting action takes place having an impermeable surface, whilst the second part has a permeable surface, so as to make easier the operation of the transfer means 114.
  • the low permeability layer may also be obtained by treating the layer 253 with suitable waterproofing substances.
  • the translation of the device 114 towards the mould 118 may also take place keeping the frame 122 in contact with the belt 102 and moving said belt too synchronously.
  • Such a method may be advantageous in order to promote a penetration of air under the base layer 108: in fact the air penetrates as the device 114 progressively protrudes from the end of the belt 1; therefore it could be possible to use a belt 102 made of a material non-permeable to the air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Finishing Walls (AREA)

Claims (19)

  1. Verfahren, bei dem Lagenmittel (108, 209; 108; 256) aus körnigem keramischem Material auf Trägermitteln (102) bereitgestellt werden, zumindest ein Teil der Lagenmittel (108, 209; 108, 256) einem Vakuum unterworfen wird, der zumindest eine Teil der Lagenmittel (108, 209; 108, 256) mittels Umsetzmitteln (114), die von den Trägermitteln (102) verschieden sind, umgesetzt wird, wobei der zumindest eine Teil ein loses Produkt aufweist, und wobei der zumindest eine Teil der Lagenmittel (108, 209; 108, 256) gepresst wird, um aus der Kompression der Lagenmittel (108, 209; 108, 256) eine Keramikfliese (104) zu erhalten, wobei das Bereitstellen ein Bereitstellen von ersten Lagenmitteln (108) distal von den Trägermitteln (102) zusammen mit zweiten Lagenmitteln (209, 256) proximal von den Trägermitteln (102) umfasst, um die Lagenmittel (108, 112; 108, 209; 108, 256) zu bilden, wobei die zweiten Lagenmittel (209, 256) eine gegenüber einem Fluidfluss geringere Permeabilität als die ersten Lagenmittel (108) aufweisen, wobei das Umsetzen ein Umsetzen der ersten Lagenmittel (112, 209, 256) zusammen mit den zweiten Lagenmitteln (108) des zumindest einen Teils der Lagenmittel (108, 112; 108, 209; 108, 256) umfasst.
  2. Verfahren nach Anspruch 1, wobei das Bereitstellen ein Verteilen der ersten Lagenmittel (108) auf den Trägermitteln (102) umfasst, um einen Basiskörper der Fliese (104) zu bilden.
  3. Verfahren nach Anspruch 2, wobei das Bereitstellen das Verteilen der zweiten Lagenmittel (256) auf den Trägermitteln (102) vor den ersten Lagenmitteln (108) umfasst.
  4. Verfahren nach Anspruch 2 oder 3, wobei weiterhin Pulvermaterial (253) gepresst wird, um die zweiten Lagenmittel (256) zu erhalten.
  5. Verfahren nach einem der Ansprüche 2 bis 4, wobei die zweiten Lagenmittel (209, 256) eine geringere Korngröße als die ersten Lagenmittel (108) aufweisen.
  6. Verfahren nach einem der Ansprüche 2 bis 5, wobei die zweiten Lagenmittel (256) ein dekoratives Muster der Fliese (104) definieren.
  7. Verfahren nach einem der vorhergehenden Ansprüche, wobei die zweiten Lagenmittel (209) eine zusammenhängende Lage bilden.
  8. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Bereitstellen ein Anordnen der Lagenmittel (108, 209; 108, 256) in Hohlräumen der Trägermittel (102) umfasst.
  9. Verfahren nach einem der vorhergehenden Ansprüche, wobei das Umsetzen ein Bewegen der Trägermittel (102) mit den Lagenmitteln (108, 112; 108, 209; 108, 256) umfasst, die auf diesen angeordnet sind, während das Vakuum auf die Lagenmittel (109, 209; 108, 256) appliziert wird.
  10. Verfahren nach einem der vorhergehenden Ansprüche, wobei vor dem Umsetzen ein Abschneiden des zumindest einen Teils von den Lagenmitteln (108, 209; 108, 256) vorgesehen ist.
  11. Vorrichtung, mit Bereitstellungsmitteln (206, 213, 210), die dazu ausgelegt sind, Lagenmittel (108, 209; 108, 256) aus körnigem keramischem Material auf Trägermitteln (102) bereitzustellen, mit Umsetzmitteln (114), die von den Trägermitteln (102) verschieden sind und dazu ausgelegt sind, die Lagenmittel (108, 209; 108, 256) in Pressmittel (118) durch Vakuummittel umzusetzen, um eine Keramikfliese (104) zu erhalten, wobei die Lagenmittel (108; 209; 108; 256) ein loses Produkt aufweisen, wobei die Bereitstellungsmittel (206, 213, 210) so ausgebildet sind, dass sie erste Lagenmittel (108) distal von den Trägermitteln (102) zusammen mit zweiten Lagenmitteln (209, 256) proximal von den Trägermitteln (102) bereitstellen, wobei die zweiten Lagenmittel (209, 256) eine gegenüber einem Fluidfluss geringere Permeabilität aufweisen als die ersten Lagenmittel (108), wobei die Umsetzmittel (114) so ausgebildet sind, dass sie die ersten Lagenmittel (108) zusammen mit den zweiten Lagenmitteln (209, 256) umsetzen.
  12. Vorrichtung nach Anspruch 11, wobei die Bereitstellungsmittel (206, 213, 210) Mittel (206, 210) zum Verteilen der ersten Lagenmittel (108) auf dem Trägermittel (102) umfassen, um einen Basiskörper der Fliese (104) zu bilden.
  13. Vorrichtung nach Anspruch 11 oder 12, wobei die Bereitstellungsmittel (206, 213, 210) weitere Mittel (213) zum Verteilen der zweiten Lagenmittel (209, 256) auf den Trägermitteln (102) umfassen.
  14. Vorrichtung nach einem der Ansprüche 11 bis 13, weiterhin mit Mitteln (255) zum Pressen von Pulvermaterial (253), um die zweiten Lagenmittel (256) zu erhalten.
  15. Vorrichtung nach einem der Ansprüche 10 bis 13, wobei die Umsetzmittel (114) Saughutzenmittel (115, 116) umfassen.
  16. Vorrichtung nach Anspruch 15, wobei die Saughutzenmittel (115, 116) Rahmenmittel (117) umfassen, innerhalb der die Hutzenmittel (115, 116) verschiebbar betätigt werden.
  17. Vorrichtung nach einem der Ansprüche 11 bis 16, wobei die Trägermittel (102) mit Furchen (103) versehen sind, die Hohlmittel definieren, in denen die Lagenmittel (108, 209; 108, 256) enthalten sind.
  18. Vorrichtung nach einem der Ansprüche 11 bis 17, wobei die Bereitstellungsmittel so ausgestaltet sind, dass zweite Lagenmittel (209) erhalten werden, die eine zusammenhängende Lage bilden.
  19. Vorrichtung nach einem der Ansprüche 11 bis 18, wobei die Umsetzmittel so ausgestaltet sind, dass sie den zumindest einen Teil von den Lagenmitteln (108, 209; 108, 256) abschneiden.
EP99118949A 1998-09-28 1999-09-27 Verfahren und Vorrichtung zur Übertragung von körnigem Material Expired - Lifetime EP0997248B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99118949A EP0997248B1 (de) 1998-09-28 1999-09-27 Verfahren und Vorrichtung zur Übertragung von körnigem Material

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
ITMO980196 1998-09-28
ITMO980197 1998-09-28
ITMO980196 IT1304642B1 (it) 1998-09-28 1998-09-28 Mezzi per trasferimento di materiale granulare particolarmenteindicati alla decorazione di piastrelle ceramiche
ITMO980197 IT1304643B1 (it) 1998-09-28 1998-09-28 Dispositivo per alimentare lo stampo nella pressatura di prodotticeramici e metodo relativo
ITMO980262 IT1304941B1 (it) 1998-12-22 1998-12-22 Metodo e dispositivo per decorare piastrelle ceramiche alla pressatura
ITMO980262 1998-12-22
ITMO980261 IT1304940B1 (it) 1998-12-22 1998-12-22 Dispositivo e metodo per realizzare decorazioni, con materiali inpolvere, su piastrelle ceramiche.
ITMO980261 1998-12-22
EP98124583A EP0927687B1 (de) 1997-12-23 1998-12-23 Verfahren und Vorrichtung zur Übertragung von körnigem Material
EP98124583 1998-12-23
EP99118949A EP0997248B1 (de) 1998-09-28 1999-09-27 Verfahren und Vorrichtung zur Übertragung von körnigem Material

Publications (3)

Publication Number Publication Date
EP0997248A2 EP0997248A2 (de) 2000-05-03
EP0997248A3 EP0997248A3 (de) 2000-12-20
EP0997248B1 true EP0997248B1 (de) 2004-07-07

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EP99118949A Expired - Lifetime EP0997248B1 (de) 1998-09-28 1999-09-27 Verfahren und Vorrichtung zur Übertragung von körnigem Material

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EP (1) EP0997248B1 (de)
AT (1) ATE270608T1 (de)
DE (1) DE69918511T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108327C1 (de) * 2001-02-21 2002-09-05 Klingenberg Dekoramik Gmbh Verfahren zum Dekorieren von Formkörpern und Vorrichtung zur Durchführung des Verfahrens
ITRE20010047A1 (it) 2001-05-08 2002-11-08 Sacmi Impianto per la formatura di piastrelle ceramiche di grandi dimensioni, e metodo
ITRE20020053A1 (it) * 2002-06-28 2003-12-29 Lb Officine Meccaniche Spa Impianto per la creazione di tessere pre-compattate di polvere ceramica e loro alimentazione alla cavita' di formatura di una pressa
ITMO20020234A1 (it) * 2002-08-12 2004-02-13 Algeri Maris Dispositivo e metodo per trasferire materiale granulare.
DE102006043270A1 (de) * 2006-09-14 2008-03-27 Laeis Gmbh Verfahren und Presse zum Herstellen von Formkörpern
CN106671263B (zh) * 2016-12-31 2019-04-16 佛山市高明贝斯特陶瓷有限公司 一种通体瓷质抛光砖的成型生产工艺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1104301B (it) * 1978-12-21 1985-10-21 Longinotti Enrico Apparecchiatura per caricare un sottostrato in uno stampo per la fabbricazione di mattonelle di cemento e per usi equivalenti
JPH0670941B2 (ja) * 1988-12-15 1994-09-07 株式会社村田製作所 積層コンデンサの製造方法
IT1257499B (it) * 1992-05-07 1996-01-25 Mass Spa Stampo per la formatura di materiali ceramici, tipicamente piastrelle pressosmaltate, e relativi mezzi di carico
IT1287505B1 (it) * 1996-11-22 1998-08-06 Algeri Maris Metodo e mezzi per la pressatura di piastrelle ceramiche.
IT1290358B1 (it) * 1997-02-18 1998-10-22 Gruppo Concorde Spa Macchina per la formatura e pressatura di polveri particolarmente per la produzione di piastrelle ceramiche nonche' procedimento per la
IT1290692B1 (it) * 1997-02-21 1998-12-10 Sacmi Procedimento per il trasferimento di polvere ceramica da una zona di prelievo in una di utilizzo.
DE69824134D1 (de) * 1997-12-23 2004-07-01 Carlo Antonio Camorani Verfahren und Vorrichtung zur Übertragung von körnigem Material

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ATE270608T1 (de) 2004-07-15
DE69918511D1 (de) 2004-08-12
EP0997248A3 (de) 2000-12-20
EP0997248A2 (de) 2000-05-03
DE69918511T2 (de) 2005-08-25

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